Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species
Abstract Knowledge of recruitment and its variability in marine fish populations contributes to sustainable fisheries but a full understanding remains elusive. An earlier study showed that haddock (Melanogrammus aeglefinus) stocks exhibited consistently higher variability and lower reproductive rate...
Published in: | ICES Journal of Marine Science |
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2022
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsac181 https://academic.oup.com/icesjms/article-pdf/79/9/2430/47265249/fsac181.pdf |
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croxfordunivpr:10.1093/icesjms/fsac181 2024-06-09T07:46:05+00:00 Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species Johannesen, Edda Keith, Dave Fogarty, Michael J Shackell, Nancy Frank, Kenneth T Manuel, Hidalgo Smolinski, Szymon Norwegian Research Council Fisheries and Oceans Ministry of Trade, Industry and Fisheries 2022 http://dx.doi.org/10.1093/icesjms/fsac181 https://academic.oup.com/icesjms/article-pdf/79/9/2430/47265249/fsac181.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ ICES Journal of Marine Science volume 79, issue 9, page 2430-2441 ISSN 1054-3139 1095-9289 journal-article 2022 croxfordunivpr https://doi.org/10.1093/icesjms/fsac181 2024-05-10T13:16:16Z Abstract Knowledge of recruitment and its variability in marine fish populations contributes to sustainable fisheries but a full understanding remains elusive. An earlier study showed that haddock (Melanogrammus aeglefinus) stocks exhibited consistently higher variability and lower reproductive rates compared to cod (Gadus morhua) stocks in the geographic regions where they co-occurred. Thus, cod may have a higher resilience to overexploitation, whereas haddock stocks may be more likely to be rescued by chance strong recruitments events. Since that initial study, the ecosystems and stocks have experienced large structural and functional changes, as well as changes in management practice and ocean warming. Here, we updated the previous earlier analysis with new data and found that despite large changes in the ecosystems explored, the patterns of recruitment variability have persisted. Recruitment variability remains higher in haddock than in cod, and the maximum annual reproduction rate at low spawning stock biomass (SSB) remains higher in cod than in haddock, although the latter difference is now less pronounced. Despite the economic and ecological importance of cod and haddock, and their long history of scientific scrutiny, the persistent difference in their reproductive biology remains unexplained. Article in Journal/Newspaper Gadus morhua North Atlantic Oxford University Press ICES Journal of Marine Science |
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Oxford University Press |
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English |
description |
Abstract Knowledge of recruitment and its variability in marine fish populations contributes to sustainable fisheries but a full understanding remains elusive. An earlier study showed that haddock (Melanogrammus aeglefinus) stocks exhibited consistently higher variability and lower reproductive rates compared to cod (Gadus morhua) stocks in the geographic regions where they co-occurred. Thus, cod may have a higher resilience to overexploitation, whereas haddock stocks may be more likely to be rescued by chance strong recruitments events. Since that initial study, the ecosystems and stocks have experienced large structural and functional changes, as well as changes in management practice and ocean warming. Here, we updated the previous earlier analysis with new data and found that despite large changes in the ecosystems explored, the patterns of recruitment variability have persisted. Recruitment variability remains higher in haddock than in cod, and the maximum annual reproduction rate at low spawning stock biomass (SSB) remains higher in cod than in haddock, although the latter difference is now less pronounced. Despite the economic and ecological importance of cod and haddock, and their long history of scientific scrutiny, the persistent difference in their reproductive biology remains unexplained. |
author2 |
Manuel, Hidalgo Smolinski, Szymon Norwegian Research Council Fisheries and Oceans Ministry of Trade, Industry and Fisheries |
format |
Article in Journal/Newspaper |
author |
Johannesen, Edda Keith, Dave Fogarty, Michael J Shackell, Nancy Frank, Kenneth T |
spellingShingle |
Johannesen, Edda Keith, Dave Fogarty, Michael J Shackell, Nancy Frank, Kenneth T Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species |
author_facet |
Johannesen, Edda Keith, Dave Fogarty, Michael J Shackell, Nancy Frank, Kenneth T |
author_sort |
Johannesen, Edda |
title |
Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species |
title_short |
Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species |
title_full |
Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species |
title_fullStr |
Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species |
title_full_unstemmed |
Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species |
title_sort |
persistent differences in recruitment variability among co-occurring north atlantic groundfish species |
publisher |
Oxford University Press (OUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1093/icesjms/fsac181 https://academic.oup.com/icesjms/article-pdf/79/9/2430/47265249/fsac181.pdf |
genre |
Gadus morhua North Atlantic |
genre_facet |
Gadus morhua North Atlantic |
op_source |
ICES Journal of Marine Science volume 79, issue 9, page 2430-2441 ISSN 1054-3139 1095-9289 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/icesjms/fsac181 |
container_title |
ICES Journal of Marine Science |
_version_ |
1801375831849697280 |